K4MZK
Unknown1x3Zone 4
License HolderSEIBERT, WILLIAM J
License ClassAmateur Extra
Min. Class RequiredGeneral
Requires General license or higher to apply for this callsign format (1x3).
License History
- Administrative Update AppliedFeb 23, 2021
- License RenewedJun 2, 2018
- License RenewedMay 29, 2008
Vanity Application Activity
Competing applications filed with the FCC for this callsign.
No competing applications detected. Monitor the FCC ULS application search to verify before filing.